Prototype Pollution in object-extend

CRITICAL 9.8CVE-2021-23702 · GHSA-m639-9whg-fw97 · Published 18/02/2022 · updated 17/06/2026

In short

CVE-2021-23702 is a CRITICAL (CVSS 9.8) vulnerability affecting object-extend (object-extend project), object-extend.
Chance of exploitation in the next 30 days (EPSS): 1.4%, higher than 72.3% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
object-extend object-extend_project	`≤ 0.5.0`	No fix yet
object-extend npm	`≤ 0.5.0`	No fix yet

The package object-extend from 0.0.0 through 0.5.0 is vulnerable to Prototype Pollution via object-extend.

NVD description

The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.

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